Updated: Dec 9, 2025 | Source: 2023-2027 Question Pool | Topic: G7A
G7A12G7A

Which symbol in Figure G7-1 represents a solid core transformer?

Diagram for question G7A12

Deep Dive: G7A12

The correct answer is C: Symbol 6. The symbol in figure G7-1 that represents a solid core transformer is Symbol 6. Solid core transformer symbols show two coils with solid lines between them, indicating a magnetic core. For amateur radio operators, this is important for reading circuit diagrams. Understanding this helps when working with transformer circuits.

Why Other Answers Are Wrong

Option A (Symbol 4): Incorrect. Symbol 4 represents a different component - likely a regular diode or other device, not a transformer. Transformers have distinct symbols. Option B (Symbol 7): Incorrect. Symbol 7 represents a tapped inductor, not a solid core transformer. Tapped inductors and transformers have different symbols. Option D (Symbol 1): Incorrect. Symbol 1 represents a FET, not a transformer. FETs and transformers have different symbols.

Exam Tip

Solid core transformer symbol = Symbol 6. Think 'S'olid 'C'ore 'T'ransformer = 'S'ymbol '6'. Solid core transformer symbols show two coils with solid lines between them. Not Symbol 1 (FET), not Symbol 4, not Symbol 7 (tapped inductor) - just Symbol 6.

Memory Aid

Solid core transformer symbol = Symbol 6. Think 'S'olid 'C'ore = 'S'ymbol '6'. Solid core transformer symbols show two coils with solid lines between them. Standard transformer symbol representation.

Real-World Example

You read a circuit diagram. Symbol 6 shows a solid core transformer with two coils and solid lines between them, indicating a magnetic core. This is the standard symbol for solid core transformers, distinguishing them from air-core transformers. This is how solid core transformers are represented.

Source & Coverage

Question Pool: 2023-2027 Question Pool

Subelement: G7A

Reference: 2023-2027 Question Pool · G7 - Practical Circuits

Key Concepts

Solid core transformer Circuit symbols Symbol 6 Transformer symbol

Official Pool Source

Question text and answer key are synchronized with the current NCVEC General Class pool and mapped to the G7A topic.